Iran's currency has dropped to its lowest value ever at 190,000 rial for each dollar amid severe U.S. sanctions against the country.
The Iranian currency has tumbled from a rate of 32,000 rials to $1 at the time of Tehran's 2015 nuclear deal with world powers.
The rial unexpectedly rallied after President Donald Trump's decision to withdraw the U.S. from the nuclear deal and reimpose crippling trade sanctions over two years ago.